Breathing-tube



(mmodel') J. T. WILHIDE.

BREATHING TUBE.

N0. 515,637. Patented Feb. 27, 1894.

W/TNESSES: INVENTUH 4 A TTOHNEYS..

UNITED STATES PATENT EErcE.

JACOB THOMAS WILHIDE, OF BRUCEVILLE, MARYLAND.

BREATHING-TUBE.

SPECIFICATION forming part of Letters Patent No. 515,637, dated February2"?, 1894.

Application filed October 10,1893. Serial No. 487,725. (No model.) I

.To @ZZ whom Zt may concern:

Be it known that I, JACOB THOMAS WIL- HIDE, of Bruceviile, in the countyof Carroll and State of Maryland, have invented a new and ImprovedBreathing-Tube, of which the following is a full, clear, and exactdescription.

'The object of the invention is to provide a new and improved breathingtube, which is simple and durable in construction, and arranged forconvenient application to teach and insure proper and regular breathingot the natural air.

The invention consists of certain parts and details, and combinations ofthe same, as will be fully described hereinafter and then pointed out inthe claim.

Reference is to be had to the accompanying drawings forming a part ofthis specication, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement as closed upto render it dustproof. Fig. 2 is a similar view of the same ready foruse. Fig. 3 is an enlarged cross sction of the same on the line 3--3 0fFig. l; and Fig. A is a similar view of the same on the line 4 4 of Fig.2.

The improved breathing tube consists of a tube A, preferably made ofhard rubber, but other suitable material may be employed. The tube A isprovided with a uniform bore, and is formed at or near its middle withan enlargement A', forming shoulders with the ends A2 and A3 of thetube. The end A2 is open and the end A3 is closed, and near this closedend is arranged in the wall of the tube a series of graduated aperturesA4, A5 and A6, as is plainly illustrated in Figs. 3 and 4. On the end A3is iitted a cap B, adapted to be turned on said'end A3 and provided withan aperture B adapted to register with one of the apertures A4, A5 orAE, the said aperture B being of about the saine size as the largestaperture of the series of apertures A4, A5 and A6. When the cap Bisturned as illustrated in Fig. 3, then the aperture B does not registerwith any of the series of apertures A4, A5 and A, so that this end ofthe tube is closed, and consequently rendered dust-proof.

When it is desired to connect the interior of the end A8 with theoutside, then the cap Bis turned so that its aperture B registers withone of the graduated apertures A4, A5 or A6, see Fig. 4. On the otherend, A2 of the tube A, is iitted a cap C, so as to close this end of thetube to render the entire tube dustproof whenever the cap Bis turned tothe position shown in Fig. 3 and described above. The cap C, however, isremoved when the device is used, it being understood that the end A2 isinserted in the mouth of the user, and in order to enable the user tohold the tube conveniently in place, I provide the end A2 withan annularrecess A7, so as to'form a convenient mouth piece on this end A2 of thetube. vIt desired, a screw eye or band D, encircles the enlarged portionA of the tube, and on this band is arranged a ring E for supporting thetube in any desired manner.

lt is a well known fact, that breathing to the fullest possible extentis essential to good health, and in order to teach and insure proper andregular breathing of the natural air, training to this end is necessary,and is readily accomplished by the operator inserting the mouth pieceformed at the end A2 of the tube in the mouth, and then drawing in theair through the nose and exhaling it through the tube, it beingunderstood that the cap B has been turned so that its aperture Bregisters with one of the apertures A4 A5 or A6. In this manner the tubeserves 4to regulate the time ot' exhalation. By this arrangement thecold air is prevented from passing directly into the system, as it iswarmed to a considerable extent in its course down the nasal passages,before reaching the throat or lungs.

Having thus fully described my invention, I claim as new and desire t0secure by Letters Patent- A breathing tube, consisting of a tube open atone end and closed at the other, and graduated apertures arranged in theWall of the tube near the closed end, and a regulating cap mounted toturn on the closed end of the said tube, and provided with an apertureadapted to register with any one of the said graduated apertures,substantially as shown and described.

JACOB THOMAS IVILHIDE.

Witnesses:

C. M. MILLS, THOMAS. J. OLIVER.

